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A007069
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First column of spectral array W(sqrt 2).
(Formerly M1329)
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2
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1, 2, 5, 7, 9, 11, 12, 15, 16, 19, 21, 22, 25, 26, 29, 31, 33, 35, 36, 39, 41, 43, 45, 46, 49, 50, 53, 55, 57, 59, 60, 63, 65, 67, 69, 70, 73, 74, 77, 79, 80, 83, 84, 87, 89, 91, 93, 94, 97, 98, 101, 103, 104, 107, 108, 111, 113, 115, 117, 118, 121, 123, 125, 127, 128, 131
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| A. Fraenkel and C. Kimberling, "Generalized Wythoff arrays, shuffles and interspersions," Discrete Mathematics 126 (1994) 137-149.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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FORMULA
| Iterated floor function : a(n)=floor(sqrt(2)*floor(sqrt(2)*n)); a(n)=A001951(A001951(n)); a(n)=2*n-1-A059648(n) - Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 06 2003
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CROSSREFS
| Sequence in context: A062288 A077059 A007300 * A140139 A130773 A163985
Adjacent sequences: A007066 A007067 A007068 * A007070 A007071 A007072
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein (mira(AT)math.berkeley.edu)
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EXTENSIONS
| More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 06 2003
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